[Technical Data Presentation] Regarding the long-duration measurement results in real mode (operation in the vacuum of the optical system).
This document is a technical report on the long-term measurement results in real mode (regarding the operation of the standard optical system in a vacuum). Two points that are likely to be problematic in a vacuum, "variations in the refractive index of air" and "distortion of the optical system due to atmospheric pressure," have been examined. It has been considered that these will not cause significant issues. Variations in displacement can be explained by temperature fluctuations, and an expansion value of approximately 40% of free expansion can be inferred. The vertical resolution has also been confirmed to be below 1 nm. [Contents] ■ Expansion and the presence of air ■ Displacement measurement results and temperature fluctuations ■ Discussion and reflections *For more details, please refer to the PDF document or feel free to contact us.
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We have established 'High-precision measurement of physical quantities using light' as our management policy. Optical measurement technology has become an indispensable element of modern cutting-edge technology. We are confident that the demand for high-precision measurement will grow stronger with the advancement of science. By combining high-precision measurement with the excellent properties of light—non-invasive, non-intrusive, non-contact, and high-precision—we can expect further technological innovation. It may not be suitable for measuring mass-produced items, nor for online measurements. However, we are committed to making it useful for cutting-edge industries that require high-precision measurement of physical quantities.